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A decentralized cooperative actuator fault accommodation of formation flying satellites in deep space

Authors: K. Khorasani; S.M. Azizi;

A decentralized cooperative actuator fault accommodation of formation flying satellites in deep space

Abstract

In this paper, a new fault accommodation framework that is based on a decentralized cooperative scheme is proposed for formation flying satellites. A low-level fault recovery (LLFR) module uses conventional estimation techniques to determine the severity of a fault. It then activates a recovery controller (RC) to accomplish the design specifications. Due to existence of a biased estimate of the fault, a high-level (HL) supervisor will detect any possible violations of the performance specifications, and consecutively activates the formation-level fault recovery (FLFR) module. This module compensates for performance degradations of the faulty satellite by requiring that the healthy satellites do allocate additional resources. Consequently, our proposed cooperative architecture recovers the fault while the decentralized control requirements and the error performance specifications are satisfied. Simulation results presented confirm the effectiveness of our proposed analytical work.

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
8
Average
Average
Average